Off-colour and Racy

Off-colour adjective - In violation of good taste even verging on the indecent.

Racy and off-colour are semantically related in lewd topic. In some cases you can use "Racy" instead an adjective phrase "Off-colour", when it comes to topics like obscene, smutty.

Racy adjective - Having much high-spirited energy and movement.

Off-colour and racy are semantically related in lewd topic. You can use "Off-colour" instead an adjective "Racy", if it concerns topics such as obscene.